Hubel and Wiesel's research on the visual cortex provided evidence for what?

The precipitating factor for a dissociative episode is usually a(an) _____

a) episode of hallucinogen use. b) injury with loss of consciousness. c) sudden deficiency in serotonin. d) unbearable stress.

Which person is at highest risk for committing suicide?

a. Harriet L., a 35-year-old devout Catholic b. George T., an elderly white widower c. Martha K., a young married professional d. Abdullah J., a middle class married man of Syrian ancestry